gold snake ring with diamond and sapphire

An 18 carat gold with two intertwined snakes their heads set with an old cut diamond (app. 0.45 carats) and a smaller cushion cut sapphire (app. 043 carats), master mark EA with a dolphin in between, circa 1910, France.

weight: 6.55 gram
width: 6 – 16 mm
ring size: 16.5 mm / 6 US